The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2010
Filed:
Jun. 28, 2007
Naomi Miyake, Osaka, JP;
Yoshirou Nakata, Kyoto, JP;
Naomi Miyake, Osaka, JP;
Yoshirou Nakata, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
According to the present invention, the outputs of the last scanning flip-flop circuitsincluded in scan chainsare compiled and compressed in an output compression circuit, a sum of the outputs from the scan chainsand an expected value written in an expected value storage circuitfrom the outside are compared with each other in an expected value decision circuit, the sum being outputted from the output compression circuit, a pass/fail decision result obtained by the comparison can be outputted from an output terminalof the expected value decision circuitto the outside, and the decision result can be stored regardless of the reset of a system.